Why is the kite called 'a cloud upon a string'?

The phrase "a cloud upon a string" poetically describes the kite's appearance as it floats in the sky, resembling a soft, fluffy cloud tethered to the ground by its string. This imagery captures the lightness and freedom of the kite as it soars, while also emphasizing the connection to the earth through the string. The metaphor evokes a sense of whimsical joy and the beauty of flight, highlighting the kite's delicate nature against the vastness of the sky.